268 Appendix A Command Reference
DCBM
Display Code Bit Mask
Class Direct processor control
Description Sets the 4-bit binary bit mask used by the DCRD? query. The mask is entered as the
decimal equivalent of a 4-bit binary number. The binary number represents the masking of
the individual sense lines from M3 (MSB) to M0 (LSB). The DCBM? query returns the
current setting of DCBM.
Command syntax DCBM mask
mask
0 = 0 0 0 0 8 = 1 0 0 0
1 = 0 0 0 1 9 = 1 0 0 1
2 = 0 0 1 0 10 = 1 0 1 0
3 = 0 0 1 1 11 = 1 0 1 1
4 = 0 1 0 0 12 = 1 1 0 0
5 = 0 1 0 1 13 = 1 1 0 1
6 = 0 1 1 0 14 = 1 1 1 0
7 = 0 1 1 1 15 = 1 1 1 1
Query syntax DCBM?
Query response mask
Other required
commands
The FMTU command instructs the generator to use the new setting. The ALLU command
updates hardware to the new setting and redraws the test image.
Example
DCBM 7 // Set mask to read sense lines 0, 1 and 2 only
FMTU // Update hardware to current buffer contents
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